When a user names a bottle via the TUI label field, that name is now
used as the slug prefix for the container identity instead of always
falling back to the agent name.
Both docker and smolmachines resolve_plan.py duplicated: slug minting,
metadata writing, agent state dir setup, git gate / egress / supervise
preparation, env_vars merge, and manifest dockerfile path resolution.
These are now consolidated in bot_bottle/backend/resolve_common.py.
Each backend's resolve_plan retains only its own logic (container name
resolution + env-file for docker; subnet allocation + guest_env build
for smolmachines).
didericis-claude
didericis